Raven

The Raven is a small black bird ornament in Bodega Bay Inn. Wanda, one of the parapsychologists that are investigating the hotel, hears groaning and bird's wings flapping. She sees a strange bird statue staring at her. Later on the parapsychologists hear a loud sound and they see the bird in pieces with green serum coming out of it. It is possible that his bird was an experiment of Toulon's and it came to life and flew into a wall, though other possibilities is that a ghost threw it to warn them or the puppets did it. But it seems to point more towards that it was alive.

Trivia

Toulon says that he was able to watch the trespassers so it's possible this bird was a watchdog for him.